Field testing of different doses of synthetic attractant in combination with colored “Plastina” sticky traps for early detection and monitoring of Drosophila suzukii

Drosophila suzukii Matsumura,1931 (Diptera: Drosophilidae) is a quarantine pest damaging both fruit and berry crops. This insect is included in the EPPO List of quarantine pests and in the Common list of quarantine pests which are absent from the EAEU territory. The pest has a high reproduction potential and can easily be introduced to new regions with regulated plant products in the process of international trade. Currently, D. suzukii forms a vast secondary area, so the development of means and methods for detecting this pest is vital. These means include traps with attractive biologically active substances that are technologically easy to manufacture (they do not re­quire expensive materials and complex technological lines), are easy to use, and are sufficiently reliable and effective.

The most effective and least labor-intensive means of detecting imago in the controlled territo­ry, as well as the main means of monitoring and observing the scale of Drosophila suzukii distribution and assessing its numbers, are the “Plastina” sticky traps, which have a combined attractive ability – color and a synthetic food attractant. This trap attracts oth males and females of Drosophila suzukii. Traps with collected insects are stored in the refrigerator for a long time (up to a year or more), while insects that are stuck to the trap remain unchanged and can be identified at any time.

This article presents the results of testing a highly effective and technologically advanced tool for detecting and monitoring the quarantine pest Drosophila suzukii in the form of “Plastina” sticky traps with an attractive mixture of components. The results of the research show that the greatest number of collected insects was recorded in white “Plastina” sticky traps in the variant of the attractive mixture of the following composition: 200 mg of acetoin, 200 mg of methionol, 200 mg of ethyl lactate, 200 mg of acetic acid, 200 mg of methyl eugenol, 400 mg of ammonium acetate. In terms of the number of specimens of the target object captured during the experimental period, the white “Plastina” trap was 1.5 times greater than the red “Plastina” trap and 6.4 times greater than the orange “Plastina” trap. Not a single Drosophila suzukii specimen was collected in the yellow “Plastina” traps.

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